Schizophrenia is a very complex mental disease. It is actually quite possible that various mechanisms may end up producing similar symptoms. Several neurotransmitter systems have been implicated: dopamine, glutamate and GABA. Most of the hypotheses focus on synapses and receptors activated by those neurotransmitters. Let us try to think differently […]

Draw a graph that shows the variation of quantity of DNA in the nucleus of the female germ cell at the time of maturation and fertilization and the egg after fertilization Draw a graph that shows the variation of quantity of DNA in the nucleus of the male germ cell […]

Altering the Genetic Code: Mutations Single nucleotide changes (point mutations) in the sequence of a gene can result in changes in the amino acid sequence of a protein produced from the mutated gene. One of the most well studied examples of the effects of a mutation on the sequence of […]

A heterozygous brown-eyed human female who is a carrier of color blindness marries a blue-eyed male who is not color-blind. Color blindness is a sex-linked trait. Assume that eye color is an autosomal trait and that brown is dominant over blue. What is the probability that any of the offspring […]